缘毛雀麦和无芒雀麦营养物质动态的研究  

A Study on Dynamics of Forage Nutrition Accumulation for Bromus Inermis and Bro-mus Ciliatus.

作　　者：杨静[1] 石凤翎[1] 西力布 

机构地区：[1]内蒙古农牧学院草原系

出　　处：《中国草地》1994年第6期32-38,共7页Grassland of China

摘　　要：对不同时期的缘毛雀麦和无芒雀麦（５个类型）的营养物质动态、干草产量动态和粗蛋白质产量动态的研究结果表明，随着生育日龄的增加，粗蛋白质、粗脂肪、粗灰分和磷含量逐渐下降：无氮浸出物和粗纤维含量逐渐增加，并符合方程Ｙ＝Ａ＋ＢＸ。缘毛雀麦和不同来源的３个类型的无芒雀麦，其地上部生物量和粗蛋白质产量符合Ｌｏｇｉｓｔｉｃ方程。全部供试牧草最适利用时期是牧草开花期至种子乳熟期。n order to determine the proper cutting time,the dynamics of hay production and for-age nutrition accumulation were studied for five lines of Bromus inermis coming from dif-ferent regions and one Bromus ciliatus.The results showed that crude protein,crudefat,crude ash and phoshorus contents decreased as plant development;the N─free ex-tract and crude fiber contents increased.The correlation equation accords with Y=A+BX. The aboveground biomass and crude protein prodcution of three lines of Bromusinermis and the Bromus ciliatus increased as plant development.Its changes accords withLogistic equation.All results suggeested that the proper cutting time should be in flow-ering or milking period.

关 键 词：缘毛雀麦 无芒雀麦 雀麦草 营养物质动态 

分 类 号：S543.801[农业科学—作物学]